Write the letter A, B, C or D on the top of the first page to indicate the most suitable response to complete each of the following exchanges.
John is talking to a cashier at the checkout counter of the supermarket.
Cashier: “All right. Keep your receipt. If something comes up, you can show it to us and you can get a refund.”
John: “________”
A.Thanks. I’ll put it in a safe place
B.Thank you. I’ll keep it for you.
C.OK, I won’t use it,
D.You’re welcome. See you.